Contact-terminal mounting



Dec. 3, 1929.'

V. R. DESFARD ET AL CONTACT TERMINAL MOUNTING Filed oct. 1G 1925 [www @MMM

y VICTOR R. DESPARD AND HANS C. R. POPP, OF MOGILL MAN UFACTUBING COMPANY,

Patented Dec. 3, 192e UNITED STATES' PATENT OFFICE VALPARAISO, INDIANA, ASSIGNORS TO A CORPORATION 0F INDIANA CONTACT-TERMINAL MOUNTING Application led October 16, 1925. Serial No. 62,835.

Our invention relates to means for mounting contact terminals and more particularly to means for mountingthe stationary contacts in a switch mechanism. v

It is a purpose of our invention to provide means for mounting Contact terminals on a base member whereby the same are held from movement in all direct-ions. Said base member is preferably an insulating body portion and is provided with a suitable depression or hollow for accomodating the contacts. Means is rovided on each of said contacts for holding t e same in fixed position relative to the base member and to each other. Said means preferably comprises an extension that is seated in a groove and thebody portion is provided with a cover member that closes said groove to hold said extension therein.

More particularly it is a purpose of our invention to provide a combination contact member and wiring terminal that is so related to an insulating body portionin which the contact is seated and said insulating body portion being so formed that when the combined contact and terminal member is in engagement therewith, the same will be held against movement in all directions provided the above mentioned cover member is in place. The combined contact and terminal members preferably each comprise a. contact making portion, a wiring terminal portion anda connectinr portion, the connecting portion lying in a plurality of planes, preferably extending at right angles to each other, and the insulatin body portion being provided with a recess or receivin each of said wiring terminal portions whlch also accommodates the respective conductor connected with said wiring terminal portion in said recess. The depression for receiving the contact and the groove receiving the connecting portion areV so related that shoulders are provided on opposite sides of the groove engagin with the voffset portions of the contact mem er extension or 'connecting portion so as to prevent movement of said contact members in a plurality of directions.

Other objects and advantages of the invention will appear as the description of the accompanying drawings proceeds. However,

'employing partly in elevation and partly in section of a switch mechanism our improved contact terminal mount-ing;

Fig. 2 is an inside face view of the insulating body portion of said switch mechanism showing certain of the contact terminals in position therein; and b Fig. 3 is a perspective view of one of the contact terminals.

Referring in detail to the drawings, our impoved contact terminal mounting is shown as ing applied to a switch mechanism having a body portion 10, a cover member 11 and an insulating gasketmember 12 positioned between said cover member and said body portion. In the form shown, the switch mechanism comprises a rotatable contact carrying member 13 upon which suitable contacts 14 are mounted which is rotated by means of the operating member 15. The contacts 14 cooperate with a plurality of contacts 16 and y16' which are mounted on suitable seats 17, provided on a shoulder in the central depres sion 18 provided in said body port-ion 10 which accommodates the rotatable contact carrying member 13 as well as the stationary contacts 16 and 16. The contacts 14 engage with the contacts 16 and 16 in any suitable manner upon rotation of the rotatable contact carrying member 13.

Each of the contacts 16 is made as shown within the scope of the dee recess 26 with the shallower groove 28.

rear face of the body portion 10 from the recess 26 for easy access to the ends of the conductors 23 and the wiring terminals 22 for testing pur oses.-

The sha1 ow grooves 28 connect the recesses 26 with the central depression or hollow 18 of the body portion 10, there being an annular shoulder 29 formed in said body portion between the shoulder 17 and the shallow grooves 28 against which the portion 1910i each of the contacts 16 rests and there being a shoulder 30 formed by the wall connecting the agamst which the portion 21 of one of the members 16 engages, it being obvious that each of the grooves 28 and recesses 26 are so related as to provide such shoulders for engagement by the portions 21.

Suitable screws 31 extend through the openings 32 for holding the cover member 11 in position on the body portion 10 and when said cover member is in position on said body portion, the insulating member 12 will engage with the portions 20 and the ortions 20 of the contact members will be rmly held in the grooves 28 with the olfset portions 19 and 21 in engagement with the shoulders 29 and 30, thus preventing movement in any direction of the contact 16. The contact 16 is made in exactly the same way except that it has an extension 33 on the contact making portion thereof. The extension 20 thereof is provided with the offsets to hold the same from movement in all directions and is seated in its groove 28 in the same manner as are those of the contact 16 and the same is provided with a wiring terminal in the same manner as the other contacts.

- Having thus described our invention, what we desire to c laim and secure by United States Letters Patent is:

1. In a device of the character described, a hollow insulating body portion, a cover therefor and contacts in said body portion, said body portion having grooves therein extending from the hollow thereof and said contacts havin extensions thereon seated in said grooves an clamped vbetween said body portion and said cover to hold said contacts in substantially fixed position in said body portion. f

2. In a device'of the character described, a hollow insulating body portion, a cover therefor and contacts inpsaid body portion,

'said body portion having grooves therein extending from the hollow thereof and said cont-acts having extensions thereon seated in said grooves, cooperating means on said body portion and said extensions holding said extensions from longitudinal movement in said grooves, said extensions being mounted between said body portion and said cover to hold said contacts in substantially fixed position in said body portion.

3. In a device of the character described, a hollow insulating body portion having recesses therein spaced from the hollow thereof, and grooves extending from each of said recesses to said hollow, there being shoulders at opposite ends of said grooves, and contact members in said hollow having holding portions extending into said grooves and recesses and having offsets extending around said shoulders, and means for confining said holding portions in said grooves.

4. In a device of the character described, a hollow insulating body portion having a groove therein communicating with said hollow, a contact in said hollow having a holding portion seated in said groove, cooperating means on said insulating body and said contact for holding said portion from longitudinal movement in said groove and means for confining said portion in said groove.

5. In a device of the character described, a hollow insulating body portion having a groove therein, a recess in said body portion, said groove communicating with said recess andwith said hollow, a contact in said hollow having a portion seated in said groove and extending into said recess, cooperating means on said insulating body and said contact for holding said portion from longitudinal movement in said groove and means for confining said portion in said groove.

6. In a device of the character described,

a body portion having a depression therein, a contact in said depression, a recess spaced from said depression, and a groove shallower than said depression and said recess defining shoulders at opposite ends thereof, a portion of said contact resting in said groove and cifset around said shoulders, and means for holding said portion in said groove.

7. In a device of the character described, a hollow insulating body portion having a groove therein communicatin with said hollow, a contact in said hollow aving a holding portion seated in said groove, coo erating means on said insulating body an said contact for holding said portion from longitudinal movement in said groove, a cover conlining said portion in said groove, and means for insulating said cover from said contact.

8. In a device of the character described, a body portion having a depression therein, a contact in said depression, a recess spaced from said depression, and-a groove shallower than said depression and said recess defining shoulders at opposite ends thereof,a porltion of said contact resting in said groove and offset aroundsaid shoulders, and a cover for confining said portion in said groove, said cover extending over said recess.

9. In a device of the character described, an insulating body portion having a depression therein, a series of contacts seated in said depression, said body portion having a plurality of grooves therein extending outwardiy from said depression, extensions on said contacts seated in said grooves, a cover for clamping said extensions in said grooves to hold said contacts in predetermined spaced relation in said depresslon, and wiring terminals on said extensions mountedin recesses in said body portion.

In witness whereof, we hereunto subscribe our names this seventh day of October, A. D.,

VICTOR R. DESPARD. HANS C. R. POPP.

CII 

